Re: 5919 Obs #28385

From: Björn Gimle via Seesat-l <seesat-l_at_satobs.org>
Date: Wed, 14 Sep 2016 13:48:51 +0200
I measured positions of max and min on the two .fits images obtained by
submitting my .jpg to astrometry.net.
This gave me also RA and Dec for the points. Then I created IOD files for
these, adding roughly estimated times,
and used HeavenSat to display the max/min "Sky/chart - Optical
measurements".
Then I interpolated the times from HS predicted track, and the observation
dots.
Note that actual prediction/obs times are not so important, since a few
seconds, or even minutes, does not displace the track so much that the
angular speed is noticably different.

I obtained 6.49 s for the two primary minima, and the four secondary minima
(with a spread of +-0.29s); 6.45 s for the maxima (spread +-0.13s with one
value offset by 0.6s removed)
The Excel sheet I created is a sort of replacement for my SYNODIC program,
which is coded with CA-Realizer (16-bit) which I can't run in W10 without
slight difficulty.

---------------------------------------------------------

2016-09-12 15:42 GMT+02:00 Björn Gimle <bjorn.gimle_at_gmail.com>:

> ...
> Trouble with aiming the camera gave me only two images.
> ...
> I may be able to produce/verify the flash period by measuring each max (or
> min) and combining the two images.
> ...
>
>> --------------------------------------------------------
>>> Björn Gimle, COSPAR 5919
>>> 59.2617 N, 18.6169 E, 51 m
>>> Satellite observation formats described:
>>> http://www.satobs.org/position/IODformat.html
>>> ---------------------------------------------------------
>>>
>>
>>
>
>
>
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Received on Wed Sep 14 2016 - 06:49:47 UTC

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